13 results
Perilunate Dislocation
On lateral wrist XR, the capitate ("apple") should sit in the lunate ("tea cup") which
onto outstretched hand ... extension • ... fracture, median nerve ... #Wrist #Carpal ... #Radiology #XRay
Scapholunate Dissociation
The spacing between all carpal bones should be 1-2 mm, look for the "Terry Thomas"
onto outstretched hand ... extension • Possible ... injuries: distal radius ... #Radiology #XRay ... Orthopedics #Sports #MSK
Triquetral Fracture
The triquetrum is the second most commonly fractured carpal bone. Look for the "pooping duck
"pooping duck sign ... flexion and extension ... injuries: Perilunate dislocation ... , distal radius ... #Sports #MSK
Posterior Elbow Dislocation
The elbow is the second most commonly dislocated major joint in adults and the
onto outstretched hand ... anterior interosseous nerve ... can't make A-OK sign ... #Radiology #XRay ... Orthopedics #Sports #MSK
Upper Extremity Dermatomes and Myotomes
Motor Function
Shoulder:
 • Abduction - C5,C6 (axillary)
 • Adduction - C6, C7,
- C6, C7, C8 Elbow ... Pronation - C7, C8 Wrist ... nerve in the radial ... Carpal Tunnel Syndrome ... Anterior Shoulder Dislocation
RADIAL HEAD FRACTURE 
Radial head fractures are the most common elbow fracture in adults and are
anterior sail sign ... onto outstretched hand ... dislocation, scaphoid ... #Radiology #XRay ... #Orthopedics #MSK
Distal Radius Fracture 
Distal radius fracture is the most common orthopedic injury. Here's a quick summary.
•
variable gross wrist ... fracture, median nerve ... injury, acute carpal ... Distal #Radiology #XRay ... #Orthopedics #MSK
Monteggia Fracture 
Fracture of proximal ulnar shaft with radial head dislocation. Remember “MUGR” to recall where
onto outstretched hand ... Exam: swollen elbow ... posterior interosseous nerve ... Ulnar #Radiology #XRay ... Orthopedics #Proximal #MSK
Supracondylar Elbow Fracture
• Most common elbow fracture in children, peak age 5-7 
• When looking at
anterior sail sign ... capitellum (age 1), radial ... anterior interosseous nerve ... Humerus #Radiology #XRay ... #Orthopedics #MSK
Inverted Supinator Test

Useful for identifying a lesion at the C5-C6 spinal cord level.  Tapping the
normally elicits elbow ... extension and wrist ... Video by Mujtaba ... Reflex #neurology #clinical ... #orthopedics #msk